Using freezable objects for enhanced performance (#3715)

* Create Optimizing-WPF-Rendering-Performance.md

Added another file for Optimizing-WPF-Rendering-Performance

* Create Freezable_Object_for_Enhanced_Performance.md

Author: ArshadAriff

docs/Freezable_Object_for_Enhanced_Performance.md

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+[Home](..\README.md) > Using `Freezable` Objects for Enhanced Performance
+
+---
+
+# Using `Freezable` Objects for Enhanced Performance
+
+## Background information
+
+WPF provides the `Freezable` class for objects that can be made immutable to optimize performance, such as brushes, pens, and transforms.
+
+## Setting Objects as `Freezable`
+
+When an object is frozen, it becomes immutable, which reduces memory usage and allows WPF to optimize rendering.
+
+```csharp
+SolidColorBrush myBrush = new SolidColorBrush(Colors.Blue);
+if (myBrush.CanFreeze)
+{
+    myBrush.Freeze();
+}
+```
+
+Frozen objects cannot be modified, so only freeze objects that don’t require changes.
+
+## Benefits of Freezable Objects
+
+Freezable objects improve rendering speed, especially for large visuals or repeated animations. This technique is particularly useful in complex UIs with many reused resources.